The 'pres' Enumservice

The Enumservice 'pres' points from a number to the address of a 'Presence Service'. Presence services allow users of a communication service to monitor the availability of other users ("buddy lists"). The "pres" Enumservice is not very wide spread yet, but it might become interesting once mobile phones provide presence lists over IP.

Enumservice type: pres
Enumservice subtype: none
Valid URI schemes: pres
Specified in: RFC 3953

The "pres" URI scheme itself is specified in RFC 3859, resolution of "pres" URIs to individual endpoints/protocols is described in RFC 3861.

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